mencari fungsi turunan

5. f(x) =[tex] \frac{1}{2} {x}^{10} [/tex]
f'(x) =[tex]10 \times \frac{1}{2} {x}^{10 - 1} [/tex]
f'(x) = [tex]5 {x}^{9} [/tex]

13. f'(x) =[tex]2( {x}^{3} + 2x)^{2 - 1} (3 {x}^{3 - 1} + 2 {x}^{1 - 1} )[/tex]
f'(x) = [tex]2( {x}^{3} + 2x)( 3{x}^{2} + 2)[/tex]

15. f(x) = (x²+3x)(x-1)
f(x) = x³+2x²-3x
f'(x) = [tex]3 {x}^{3 - 1} + 2 \times 2 {x}^{2 - 1} - 3[/tex]
f'(x) =3x²+4x-3

16. f(x) = -x²+x+4
f'(x) = -2x+1
f'(0) = -2(0)+1
f'(0) = 1

17. f(x) = x²-4x+3
f'(x) = 2x-4
0 = 2x-4
x = 4/2
x = 2